XXV. Ein Fall von Arsenintoxikation

The respiratory exchange of animals and man

“…The influence of high oxygen pressures on the respiratory exchange of warm-blooded animals was investigated for the first time by Lavoisier and Seguin [1814] who found that the respiratory exchange is independent of the oxygen pressure. This result has been confirmed by all later observers, whether working on man or on animals Schaternikoff [1904], Benedict and Higgins [1911]), and has been called in doubt only by experimenters whose methods were manifestly faulty (Rosenthal [1902]). Paul Bert [1878] found a maximum oxygen absorption in air with about 50 per cent, of oxygen and a slight 1 In experiments made at high altitudes in mountains (Schumburg and Zuntz [1896] ; Zuntz, Loewy, Miiller and Caspari [1906] ; Jaquct and Stahelin [1900] ; v. Schrotter and Zuntz [1902] and others) an increase in standard metabolism is regularly observed at heights above 4000 m. and often also at lower heights, but in the opinion of the writer the physiological conditions during mountain expeditions become too complicated to allow conclusions to be drawn with regard to the influence of the oxygen pressure taken by itself, decrease with both higher and lower oxygen percentages.…”